Description:

Stubs out a new controller and its views. Pass the controller name, either
CamelCased or under_scored, and a list of views as arguments.

To create a controller within a module, specify the controller name as a
path like 'parent_module/controller_name'.

This generates a controller class in app/controllers and invokes helper,
template engine and test framework generators.

Example:

`rails generate controller CreditCard open debit credit close`

Credit card controller with URLs like /credit_card/debit.
    Controller:      app/controllers/credit_card_controller.rb
    Functional Test: test/functional/credit_card_controller_test.rb
    Views:           app/views/credit_card/debit.html.erb [...]
    Helper:          app/helpers/credit_card_helper.rb